Magnetic properties of fine Fe-. Beta. particles

Conference · Fri Sep 01 00:00:00 EDT 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA)

OSTI ID:5212656

Nafis, S; Hadjipanayis, G C; Sorensen, C M ^[1]; Klabunde, K J ^[2]

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1. Kansas State Univ., Manhattan, KS (USA). Dept. of Physics
2. Kansas State Univ., Manhattan, KS (USA). Dept. of Chemistry

The magnetic properties of fine Fe-{Beta} particles with different boron concentration and particle sizes are studied. The powders were prepared by reducing Fe-salts with NaBH/sub 4/ as a reducing agent in aqueous solution. The particle size ranged from 300-600A. X-ray diffraction patterns show that the particles are crystalline for boron concentrations less than 20 at% and amorphous for greater concentrations. The maximum coervicity and saturation magnetization obtained for these particles are approximately 1200 Oe and 160 emu/g at room temperature. The coercivities are about two orders of magnitude higher than the values reported for Fe-{Beta} metallic glasses and {alpha}-Fe.

• OSTI ID: 5212656
• Report Number(s): CONF-890309--
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA) Vol. 25:5; ISSN IEMGA; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
360603 -- Materials-- Properties
AMORPHOUS STATE
BORIDES
BORON COMPOUNDS
COERCIVE FORCE
COHERENT SCATTERING
DIFFRACTION
IRON BORIDES
IRON COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIZATION
METALLIC GLASSES
PARTICLE SIZE
PHYSICAL PROPERTIES
POWDERS
SCATTERING
SIZE
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION